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authorRoland McGrath <roland@gnu.org>1995-09-17 20:23:15 +0000
committerRoland McGrath <roland@gnu.org>1995-09-17 20:23:15 +0000
commit60478656fad8d8a487e9bc52d025f69767c3262b (patch)
tree0ae0836023f1c2f80064e7611f91d19c482208d9 /sysdeps/posix/ttyname_r.c
parent9fd18b6c1b397e1af82a0b544f10f946c73864b6 (diff)
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Sat Sep 16 17:47:19 1995 Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>
* elf/elf.h (AT_GID): Fix typo: Read -> Real. * misc/efgvt_r.c: New file. Reentrant version of [efg]cvt functions. * misc/efgcvt.c: Rewrite to use reentrant functions. * misc/hsearch_r.c: New file. Reentrant version of functions from hsearch family. * misc/hsearch.c, misc/tsearch.c: New files. * misc/Makefile (routines): Add efgcvt_r, hsearch_r, hsearch, tsearch. * posix/unistd.h (ttyname_r): Add prototype for new function. * stdlib/drand48_r.c, stdlib/erand48_r.c, stdlib/jrand48_r.c, stdlib/lrand48_r.c, stdlib/mrand48_r.c, stdlib/nrand48_r.c, stdlib/seed48_r.c, stdlib/srand48_r.c, stdlib/lcong48_r.c, stdlib/drand48-iter.c: New files implementing reentrant versions of functions from drand48 family. * stdlib/seed48.c, stdlib/drand48.c, stdlib/erand48.c, stdlib/jrand48.c, stdlib/lrand48.c, stdlib/mrand48.c, stdlib/nrand48.c, stdlib/srand48.c, stdlib/lcong48.c: Rewrite to use reentrant versions. * stdlib/a64l.c, stdlib/l64a.c: New files. Implement a64l() and l64a() functions from SysV library. * stdlib/Makefile (routines): Add drand48_r, erand48_r, lrand48_r, nrand48_r, mrand48_r, jrand48_r, srand48_r, seed48_r, lcong48_r, drand48-iter, a64l, l64a. * stdlib/stdlib.h: Declare them. * stdlib/random_r.c: New file. Reentrant version of functions from random family. * stdlib/stdlib.h: Declare them. * stdlib/random.c: Rewrite to use reentrant functions. * string/strerror_r.c: New file. Reentrant version. * string/strerror.c: Change for new _strerror_internal form. * string/Makefile (routines): Add strerror_r. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start): Set default value of user_entry to `_start'. Close AT_ENTRY case with `break'. * sysdeps/generic/strstr.c: New and much faster implementation by Stephen R. van den Berg. * sysdeps/generic/_strerror.c: _strerror_internal now takes three argument and has and explicit buffer length. * sysdeps/mach/_strerror.c: Change for new interface with three arguments. * stdio/perror.c, stdio/vfprintf.c: Callers changed. * sysdeps/mach/hurd/ttyname_r.c: New file. Reentrant version. * sysdeps/posix/ttyname_r.c: New file. Reentrant version. * sysdeps/stub/ttyname_r: New file. Define as dummy function. * sysdeps/posix/utimes.c: Include <utime.h> for prototype. (utimes): First parameter to utime must be file, not path. * sysdeps/posix/sysconf.c (__sysconf): Test for CLK_TCK in case _SC_CLK_TCK and return it when available. Test for STREAM_MAX in case _SC_STREAM_MAX and return it when available. Add case for _SC_2_LOCALEDEF which is now available. * posix/sys/types.h [__USE_SVID] (key_t): New type. * sysvipc/Makefile, sysvipc/ftok.c, sysvipc/sys/ipc.h, sysvipc/sys/msg.h, sysvipc/sys/sem.h, sysvipc/sys/shm.h, sysdeps/stub/sys/msq_buf.h, sysdeps/stub/sys/sem_buf.h, sysdeps/stub/sys/shm_buf.h, sysdeps/stub/sys/ipc_buf.h, sysdeps/stub/semctl.c, sysdeps/stub/semget.c, sysdeps/stub/semop.c, sysdeps/stub/shmat.c, sysdeps/stub/shmctl.c, sysdeps/stub/shmdt.c, sysdeps/stub/shmget.c, sysdeps/stub/msgctl.c, sysdeps/stub/msgget.c, sysdeps/stub/msgrcv.c, sysdeps/stub/msgsnd.c: New files. Add implementation of System V IPC.
Diffstat (limited to 'sysdeps/posix/ttyname_r.c')
-rw-r--r--sysdeps/posix/ttyname_r.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/sysdeps/posix/ttyname_r.c b/sysdeps/posix/ttyname_r.c
new file mode 100644
index 0000000000..e225da2be2
--- /dev/null
+++ b/sysdeps/posix/ttyname_r.c
@@ -0,0 +1,91 @@
+/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+#ifndef MIN
+# define MIN(a, b) ((a) < (b) ? (a) : (b))
+#endif
+
+/* Store at most BUFLEN character of the pathname of the terminal FD is
+ open on in BUF. Return 0 on success, -1 otherwise. */
+int
+ttyname_r (fd, buf, buflen)
+ int fd;
+ char *buf;
+ int buflen;
+{
+ static const char dev[] = "/dev";
+ struct stat st;
+ dev_t mydev;
+ ino_t myino;
+ DIR *dirstream;
+ struct dirent *d;
+ int save = errno;
+
+ /* Test for the absolute minimal size. This makes life easier inside
+ the loop. */
+ if (buflen < sizeof (dev) + 2)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+
+ if (fstat (fd, &st) < 0)
+ return -1;
+ mydev = st.st_dev;
+ myino = st.st_ino;
+
+ dirstream = opendir (dev);
+ if (dirstream == NULL)
+ return -1;
+
+ /* Prepare the result buffer. */
+ memcpy (buf, dev, sizeof (dev));
+ buf[sizeof (dev)] = '/';
+ buflen -= sizeof (dev) + 1;
+
+ while ((d = readdir (dirstream)) != NULL)
+ if (d->d_fileno == myino)
+ {
+ char *cp;
+
+ cp = stpncpy (&buf[sizeof (dev) + 1], d->d_name,
+ MIN (d->d_namlen + 1, buflen));
+ cp[0] = '\0';
+
+ if (stat (buf, &st) == 0 && st.st_dev == mydev)
+ {
+ (void) closedir (dirstream);
+ errno = save;
+ return 0;
+ }
+ }
+
+ (void) closedir (dirstream);
+ errno = save;
+ return -1;
+}